Universal Memory Interface (UMI)

UMI is a transaction based standard for accessing memory through request-response message exchange patterns. Our design philosophy: make everything addressable and keep it simple.

UMI includes five distinct abstraction layers:

• Protocol: Protocol/application specific payload (Ethernet, PCIe)
• Transaction: Address based request-response messaging
• Signal: Latency insensitive signaling (packet, ready, valid)
• Link: Communication integrity (flow control, reliability)
• Physical: Electrical signaling (electrons, wires, etc.)

Architecture

Key Features

• independent request and response channels
• word sizes up to 1024 bits
• up to 256 word transfers per transaction
• atomic transaction support
• quality of service support
• protection and security support
• reserved opcodes for users and future expansion

To learn more about UMI, please see the GitHub repo.